<ion-view id="p-brand-pre">
    <ion-content>
        <h1>请选择产品前缀</h1>
        <button class="button button-balanced button-small btn-brand-pre"
                ng-repeat="item in brandPreList" ng-click="goBrand(item)">
            {{item.pre}}
        </button>
    </ion-content>
</ion-view>